// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

#ifndef _ST_HPC_PPL_NN_RUNTIME_CUDA_SCHEDULER_GRAPH_H_
#define _ST_HPC_PPL_NN_RUNTIME_CUDA_SCHEDULER_GRAPH_H_

#include "ppl/common/retcode.h"
#include "ppl/nn/engines/cuda/cuda_device.h"
#include <vector>
#include <cuda_runtime.h>

namespace ppl { namespace nn { namespace cuda {
class CudaGraphRunner {
public:
    CudaGraphRunner();
    ppl::common::RetCode ExecInit();
    ppl::common::RetCode ExecEnd();
    ppl::common::RetCode TrueExec();
    inline bool IsGraphBuilt() {
        return built_;
    }

    void AddDevice(const CudaDevice* dev);
    ~CudaGraphRunner();

private:
    ppl::common::RetCode GenStreamDepandency(cudaStream_t source, cudaStream_t destination);

private:
    bool built_;
    std::vector<const CudaDevice*> depandency_devices_;
    cudaGraphExec_t graph_exec_;
    cudaStream_t stream_;
};

}}} // namespace ppl::nn::cuda

#endif